HHH-17202 Test ArrayStoreException for single field id class entity collection batch loading

hibernate-core/src/test/java/org/hibernate/orm/test/batch/BatchAndClassIdCollectionTest.java

@@ -0,0 +1,227 @@
+package org.hibernate.orm.test.batch;
+
+import java.io.Serializable;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.hibernate.annotations.BatchSize;
+import org.hibernate.cfg.AvailableSettings;
+
+import org.hibernate.testing.jdbc.SQLStatementInspector;
+import org.hibernate.testing.orm.junit.DomainModel;
+import org.hibernate.testing.orm.junit.JiraKey;
+import org.hibernate.testing.orm.junit.ServiceRegistry;
+import org.hibernate.testing.orm.junit.SessionFactory;
+import org.hibernate.testing.orm.junit.SessionFactoryScope;
+import org.hibernate.testing.orm.junit.Setting;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import jakarta.persistence.CascadeType;
+import jakarta.persistence.Entity;
+import jakarta.persistence.FetchType;
+import jakarta.persistence.Id;
+import jakarta.persistence.IdClass;
+import jakarta.persistence.JoinColumn;
+import jakarta.persistence.ManyToOne;
+import jakarta.persistence.OneToMany;
+import jakarta.persistence.Table;
+import org.assertj.core.api.Assertions;
+
+@ServiceRegistry(
+		settings = {
+				@Setting( name = AvailableSettings.DIALECT_NATIVE_PARAM_MARKERS, value = "false" )
+		}
+)
+@DomainModel(
+		annotatedClasses = {
+				BatchAndClassIdCollectionTest.Child.class,
+				BatchAndClassIdCollectionTest.Parent.class
+		}
+)
+@SessionFactory(
+		useCollectingStatementInspector = true
+)
+@JiraKey("HHH-17202")
+public class BatchAndClassIdCollectionTest {
+
+	@BeforeAll
+	public void setUp(SessionFactoryScope scope) {
+		scope.inTransaction(
+				session -> {
+					for (long i = 1L; i < 11; i++) {
+						Parent parent = new Parent( i );
+						Child child = new Child( i * 100L + 1L, parent );
+						Child child2 = new Child( i * 100L + 2L, parent );
+						Child child3 = new Child( i * 100L + 3L, parent );
+						Child child4 = new Child( i * 100L + 4L, parent );
+						Child child5 = new Child( i * 100L + 5L, parent );
+						Child child6 = new Child( i * 100L + 6L, parent );
+						Child child7 = new Child( i * 100L + 7L, parent );
+						Child child8 = new Child( i * 100L + 8L, parent );
+						Child child9 = new Child( i * 100L + 9L, parent );
+						Child child10 = new Child( i * 100L + 10L, parent );
+						Child child11 = new Child( i * 100L + 11L, parent );
+						session.persist( parent );
+					}
+				}
+		);
+	}
+
+	@Test
+	public void testBatchInitializeChildCollection(SessionFactoryScope scope){
+		SQLStatementInspector statementInspector = (SQLStatementInspector) scope.getStatementInspector();
+		scope.inTransaction(
+				session -> {
+					statementInspector.clear();
+					final List<Parent> list = session.createSelectionQuery( "from Parent", Parent.class )
+							.getResultList();
+					list.get( 0 ).getChildren().size();
+					statementInspector.assertExecutedCount( 2 );
+					Assertions.assertThat( statementInspector.getSqlQueries().get( 0 ) ).doesNotContain( "?" );
+					if ( scope.getSessionFactory().getJdbcServices().getDialect().useArrayForMultiValuedParameters() ) {
+						Assertions.assertThat( statementInspector.getSqlQueries().get( 1 ) ).containsOnlyOnce( "?" );
+					}
+					else {
+						Assertions.assertThat( statementInspector.getSqlQueries().get( 1 ) ).containsOnlyOnce( "in (?,?,?,?,?)" );
+					}
+				}
+		);
+	}
+
+	@Entity(name = "Child")
+	@Table(name = "child_tablle")
+	@IdClass(Child.IdClass.class)
+	public static class Child {
+		@Id
+		private Long id;
+
+		private String name;
+
+		@ManyToOne
+		@JoinColumn(name = "parent_id")
+		private Parent parent;
+
+		public Child() {
+		}
+
+		public Child(Long id, Parent parent) {
+			this.id = id;
+			this.name = String.valueOf( id );
+			this.parent = parent;
+			parent.addChild( this );
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public Parent getParent() {
+			return parent;
+		}
+
+		public static class IdClass implements Serializable {
+			private long id;
+
+			public IdClass() {
+			}
+
+			public IdClass(long id) {
+				this.id = id;
+			}
+
+			@Override
+			public boolean equals(Object o) {
+				if ( this == o ) {
+					return true;
+				}
+				if ( o == null || getClass() != o.getClass() ) {
+					return false;
+				}
+
+				Parent.IdClass idClass = (Parent.IdClass) o;
+
+				return id == idClass.id;
+			}
+
+			@Override
+			public int hashCode() {
+				return (int) ( id ^ ( id >>> 32 ) );
+			}
+
+		}
+	}
+
+	@Entity(name = "Parent")
+	@Table(name = "parents")
+	@IdClass(Parent.IdClass.class)
+	public static class Parent {
+		@Id
+		private Long id;
+
+		private String name;
+
+		@BatchSize(size = 5)
+		@OneToMany(mappedBy = "parent", fetch = FetchType.LAZY, cascade = CascadeType.ALL, orphanRemoval = true)
+		public Set<Child> children = new HashSet<>();
+
+		public Parent() {
+		}
+
+		public Parent(Long id) {
+			this.id = id;
+			this.name = String.valueOf( id );
+		}
+
+		public Long getId() {
+			return id;
+		}
+
+		public String getName() {
+			return name;
+		}
+
+		public Set<Child> getChildren() {
+			return children;
+		}
+
+		public void addChild(Child child){
+			children.add( child );
+		}
+
+		public static class IdClass implements Serializable {
+			private long id;
+
+			public IdClass() {
+			}
+
+			public IdClass(long id) {
+				this.id = id;
+			}
+
+			@Override
+			public boolean equals(Object o) {
+				if ( this == o ) {
+					return true;
+				}
+				if ( o == null || getClass() != o.getClass() ) {
+					return false;
+				}
+
+				IdClass idClass = (IdClass) o;
+
+				return id == idClass.id;
+			}
+
+			@Override
+			public int hashCode() {
+				return (int) ( id ^ ( id >>> 32 ) );
+			}
+		}
+	}
+}